Flat-arch floor construction



Feb. 2e', 1924;

E. v. .JOHNSON FLAT ARCHl FLOORCONSTEUCTION Filed March' 8. 1920 HIIHH'I; INH!! nu M Patented Feb. 26, 12245.

ERNEST V. JOHNSON, OF CHICAGO, lILLIl\l`(.')IS.V

FLAT-ARCH FLOOR CONSTRUCTION.

Application filed March 8, 1920*. Serial No. 364,017.

To all whom t may eminem.'

Be it known that l, ERNEST V.VJoHNsoN, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvementin Flat-Arch Floor Constructions, of which the following is a specification.

This invention relates in general to fiat arch door construction and more particularly to constructions of this kind formed of hollow tile. Prior to my invention it has been generally the custom in constructing flat arch :tile iioors to provide the tile of rhombic shape and set them in place with a key tile at the center of each course. In this arrangement substantially all the tile of the arch haverequired to be of special form and by reason of the key tile at the center it has been necessary that the tiles of successive courses be arranged in registration as contradistinguished from staggered relation.

My present invention has for its principal object the provision of a flat arch tile floor construction, using the ordinary rectangular tile, and also permitting Ithe staggering of the tile with respect to each other in adjacent courses.

Another and highly important object of the invention is the provision of a at arch tile oor construction of unusual strength and capable of being laid by the usual labor available for the purpose.

Other objects and advantages of the invention will be apparent as it is betterunderstood from the following description, which taken in connection with the yaccompanying drawings discloses a preferred embodiment thereof.

Referring to the drawings,

Figure 1 is a partial perspective view of a flat arch tile floor construction laid in accordance with my present invention;

Fig. 2 is an enlarged partial section through the same;

Fig. 3 is a perspective view of a rectangular or cubical tile o-f ordinary shoe conf struction Fig. l is a similar view of a shoe tile usedV For the purpose of illustrating my present invention l have shown on thel drawing in Fig. 1 a part of a flat` arch floor construction, in which it is embodied. ln this figure reference characters 11 indicate the usual structural metal l-beam members provided as a part of the framework of the building. The dat arch construction is laid between these I-beam members and consists of rec- 05 tangular or cubical tiles l2, shoe tile 13 at the l-beani and wedge. tile let between the slice tile and adjacent rectangular tiles.

The slice tile is provided with a recess 15 to tit upon the lower adjacent flange 16 of 70 the -beam and has a face 17 thereabove for disposal at the web of the l-beam. Voids 1S may extend through the tile, if desired. The face of the tile, 19, opposite the face 17 is bevelled or inclined upwardly and toward the face 17.

The rectangular blocks 12 shown in perspective in Fig. 3 are of usual form and consist of faces arranged at right angles to adjacent faces and each parallel with the 30 tile shown on the drawing may be taken to have dimensions 12 X 12 x 12" and is provided with siX voids 21 extending through it and the sides are given the usual scoring or roughening.

The wedge tile 14 is of ordinary baked 90 clay material and has one face 22 arranged at right angles with its top face 23 and the other face 24 angularly disposed with respect to the two faces 22 and 23 so that an end View of the tile is of the right angle triangular form shown at 25.

In constructing the floor, the shoe tile 13 and a course of rectangular tile 12 is laid in position with the usual mortar joints between them. Thereafter the wedge tile 14 100 are inserted between the shoe tile and the adjacent rectangulartile and driven into place, wedging the tile tightly together and insurng com lete bonding between adjacent tile aces. ranged at the ends and I have found that when thus constructed the course of tile is as strong, where the work is reasonably Well done, as is` the case wherekey tile are used at the center of the course and the other tile M0 made of corresponding special form. The course should have a thickness sucient to hese wedge tile act as keys arinclude the theoretical arch, i. e. the line or area along which the load carried is concentrated. This arrangement permits of the staggering of the tile of each course With respect to those adjacent and this is accomplished by starting a course with a full tile and the courses on each side of it with half tile, as may be seen' in Fig. 1.

In order to protect the I-beams I provide beneath each a row of rectangular blocks 26 of clay. As is usual the floor body 2T is provided upon the top ot the tile and embraces and includes the tops of the Lbeams, and ceiling material Q8 may be provided beneath the fioor. l preferably give to the fiat` arch the slightrcroivning, say an inch or so in a span of several feet, Vin accordance With the custom heretofore existent in the laying oi tile fiat arches of the special terms mentioned.

While the Wedge tile are provided and insure a complete bond between the rectangular tile, it will be manifest that this may be otherwise accomplished.

It is thought that the invention and many of its advantages will be understood from the foregoing description, and it will be ap parent that various changes may be made in the form, construction and varrangement of the parts Without departing'froln the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim;

l. A flat arch floorconstruction, comprising supports, a substantially flat tile body therebetween and comprising blocks of duplicated rectangular heizaliedron orni'and arranged in courses, and wedge blo'cltspbeing girder-engaging tile and tile of rectangu- Y lar hexahedron form arranged in substantiallyT flat courses extending between oppositely arranged girder-engaging tile and a Wedge block inserted between-a girder-en gaging tile and the adjacent hexahedron tile.

ERNEST V. JOHNSON. 

